In order to use Jena's API to navigate RDF graphs, I need to know how this particular node is represented. If the node were a literal, its literallexicalform would be sufficient. Since the node is represented as an instance of "Resource" the node's label is the namespace + the localname. However, "http://www.govtrack.us/data/photos/410069."; Is clearly not a NS, and "jpeg" is not its local name.
Using Jena's API how can one determine if the given "Resource" node can represented by its literallexicalform, or by its namespace+localname. Thanks. Thanks, Rodrigo. -----Original Message----- From: Andy Seaborne [mailto:[email protected]] Sent: Friday, March 22, 2013 4:59 PM To: [email protected] Subject: Re: RDF Model Namespaces On 22/03/13 20:47, Pastrana, Rodrigo (RIS-BCT) wrote: > I'm new to Jena RDF API and I'm noticing some unexpected behavior regarding > statement namespaces... > I've noticed that URI resources such as > "http://www.govtrack.us/data/photos/412483.jpeg"; in the below excerpt > of the congressional people > graph(http://www.govtrack.us/data/rdf/people.rdf.gz) > Are reported to have namespace: " http://www.govtrack.us/data/photos/410069."; > And local name "jpeg" using the com.hp.hpl.jena.rdf.model.Resource > getLocalName(), and getNameSpace(). > Is this correct behavior? It looks to me like the dot is being used as a > delimiter between the NS and the local name. Is there a way to change that > behavior ? thanks! > > > <foaf:Person > rdf:about="http://www.rdfabout.com/rdf/usgov/congress/people/R000589";> > <foaf:name>E. Rigell</foaf:name> > <usgov:name>E. Rigell</usgov:name> > <vcard:N> > <rdf:Description> > <vcard:Given>E.</vcard:Given> > <vcard:Other>Scott</vcard:Other> > <vcard:Family>Rigell</vcard:Family> > <vcard:Prefix>Rep.</vcard:Prefix> > </rdf:Description> > </vcard:N> > <foaf:gender>male</foaf:gender> > <vcard:BDAY>1960-05-28</vcard:BDAY> > <foaf:img rdf:resource="http://www.govtrack.us/data/photos/412483.jpeg"/> > <usgov:congressBioGuideID>R000589</usgov:congressBioGuideID> > <foaf:title>Rep.</foaf:title> > <foaf:homepage>http://rigell.house.gov/</foaf:homepage> > </foaf:Person> > > > Thanks, Rodrigo. Jena is finding the maximal XML qname - the namespace mechanism can't be sure that it isn't going to be used a property. Both properties (must) and types (can be) qnames in RDF/XML. RDF does not distinguish classes/properties/individuals. http://www.govtrack.us/data/photos/412483.jpeg An XML qname local part can't start with a digit or a "." so "jpeg" is the longest local part. > Is this correct behavior? Yes > Is there a way to change that behavior ? No - the RDF/XML serializer is relying on it. But what are you using the namespace/localname for ? If it's display, then you are not bound by the XML restrictions and can split it yourself. The resource is the URI - it does not carry it's namespace with it. In Turtle, the prefix names are not restricted, but then there is not a requirement to split a URI ever anyway. Andy > > ----------------------------------------- The information contained in this e-mail message is intended only for the personal and confidential use of the recipient(s) named above. This message may be an attorney-client communication and/or work product and as such is privileged and confidential. If the reader of this message is not the intended recipient or an agent responsible for delivering it to the intended recipient, you are hereby notified that you have received this document in error and that any review, dissemination, distribution, or copying of this message is strictly prohibited. If you have received this communication in error, please notify us immediately by e-mail, and delete the original message.
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![http://www.govtrack.us/data/photos/412483.jpeg"/](https://www.govtrack.us/data/photos/412483.jpeg"/){kind=link}
